body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Open Sans", system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    background-color: #f6f1e6;
}

.button {
    position: relative;
    padding: 0 8px 12px;
    min-width: 10em;
}

.button-top {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 0;
    padding: 8px 16px;
    transform: translateY(0);
    text-align: center;
    color: #fff;
    text-shadow: 0 -1px rgba(0, 0, 0, 0.25);
    transition-property: transform;
    transition-duration: 0.2s;
    -webkit-user-select: none;
    user-select: none;
}
.button:active .button-top {
    transform: translateY(6px);
}
.button-top::after {
    content: "";
    position: absolute;
    z-index: -1;
    border-radius: 4px;
    width: 100%;
    height: 100%;
    box-sizing: content-box;
    background-image: radial-gradient(#cd3f64, #9d3656);
    text-align: center;
    color: #fff;
    box-shadow: inset 0 0 0px 1px rgba(255, 255, 255, 0.2), 0 1px 2px 1px rgba(255, 255, 255, 0.2);
    transition-property: border-radius, padding, width, transform;
    transition-duration: 0.2s;
}
.button:active .button-top::after {
    border-radius: 6px;
    padding: 0 2px;
}

.button-bottom {
    position: absolute;
    z-index: -1;
    bottom: 4px;
    left: 4px;
    border-radius: 8px/16px 16px 8px 8px;
    padding-top: 6px;
    width: calc(100% - 8px);
    height: calc(100% - 10px);
    box-sizing: content-box;
    background-color: #803;
    background-image: radial-gradient(4px 8px at 4px calc(100% - 8px), rgba(255, 255, 255, 0.25), transparent), radial-gradient(4px 8px at calc(100% - 4px) calc(100% - 8px), rgba(255, 255, 255, 0.25), transparent), radial-gradient(16px at -4px 0, white, transparent), radial-gradient(16px at calc(100% + 4px) 0, white, transparent);
    box-shadow: 0px 2px 3px 0px rgba(0, 0, 0, 0.5), inset 0px -1px 3px 3px rgba(0, 0, 0, 0.4);
    transition-property: border-radius, padding-top;
    transition-duration: 0.2s;
}
.button:active .button-bottom {
    border-radius: 10px 10px 8px 8px/8px;
    padding-top: 0;
}

.button-base {
    position: absolute;
    z-index: -2;
    top: 4px;
    left: 0;
    border-radius: 12px;
    width: 100%;
    height: calc(100% - 4px);
    background-color: rgba(0, 0, 0, 0.15);
    box-shadow: 0 1px 1px 0 rgba(255, 255, 255, 0.75), inset 0 2px 2px rgba(0, 0, 0, 0.25);
}